[R-sig-Geo] convert long/lati to UTM

[Paul Hiemstra]

Hi,

More in general you need to take a look at the sp-pacakge for Spatial 
classes in R. Once your data is in these classes you can use spTransform 
from the rgdal pacakge to perform the projection. spTransform uses the 
proj4 library. You need to find the so called proj4 strings describing 
both the source and target projection.

cheers,
Paul

Steve Hong schreef:
> Hi R-sig-geo list,
>
> I am very new to spatial stat using R. I have a basic (pretty much to most of you) question. I have data set with "Longitude" and "Latitude" columns and want to convert to them "UTM" Although I found example of it from the previous questions and answers, I am still struggling to handle the task. Can anyone give me step by step guide as detailed as possible? I copied and pasted partial data below.
>
>   
>> df
>>     
>    Latitude Longitude     V1          V2           V3          V4           V5
> 1  44.93342 -91.26773 5.633098 5.768218 5.455419 0.000000 3.797475
> 2  45.26847 -91.00759 5.571924 5.236741 0.000000 3.797475 4.450634
> 3  45.42214 -91.09543 5.994687 5.517567 0.000000 4.775137 5.589799
> 4  45.41381 -91.68441 6.066919 5.460165 0.000000 3.496515 5.793042
> 5  45.39483 -91.96903 6.089662 5.663694 4.726833 4.496390 5.553282
> 6  45.30666 -92.33407 5.252253 5.087444 3.496515 4.098471 4.838805
> 7  45.81549 -92.08828 5.967668 5.309292 0.000000 0.000000 4.098471
> 8  45.42060 -92.25039 5.645596 5.309292 0.000000 0.000000 4.700505
> 9  45.13453 -91.51800 5.838799 5.464860 0.000000 4.838805 5.613648
> 10 43.94975 -88.07627 5.812347 5.703203 4.672477 3.797475 4.450634
>
> Thank you very much in advance!!!
>
> Steve
>
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